Answer: tunney

AnswerCrossword Clue
TUNNEY

Dempsey defeater

TUNNEY

Top heavyweight, 1926-28.

TUNNEY

Dempsey's successor.

TUNNEYDempsey's successor
TUNNEY
Dempsey's nemesis
TUNNEY
Boxing champ whose autobiography was titled "A Man Must Fight"
TUNNEY"A Man Must Fight" author Gene
TUNNEYWriter of "A Man Must Fight," 1932
TUNNEY"The Fighting Marine"